CVE-2026-46089
published 2026-05-27CVE-2026-46089: In the Linux kernel, the following vulnerability has been resolved: zram: do not forget to endio for partial discard requests As reported by Qu Wenruo and…
medium5.5
In the Linux kernel, the following vulnerability has been resolved:
zram: do not forget to endio for partial discard requests
As reported by Qu Wenruo and Avinesh Kumar, the following
getconf PAGESIZE
65536
blkdiscard -p 4k /dev/zram0
takes literally forever to complete. zram doesn't support partial
discards and just returns immediately w/o doing any discard work in such
cases. The problem is that we forget to endio on our way out, so
blkdiscard sleeps forever in submit_bio_wait(). Fix this by jumping to
end_bio label, which does bio_endio().
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 0120dd6e4e202e19a0e011e486fb2da40a5ea279 < 2d1f18efccdb8b29552399d024c36b705447e975 | 2d1f18efccdb8b29552399d024c36b705447e975 |
| linux | linux | >= 0120dd6e4e202e19a0e011e486fb2da40a5ea279 < 35d3300f6357cfaa72db2721dc2b345b19bac5df | 35d3300f6357cfaa72db2721dc2b345b19bac5df |
| linux | linux | >= 0120dd6e4e202e19a0e011e486fb2da40a5ea279 < a02363f71a79b755daa78a70d6b217f9c13c8c85 | a02363f71a79b755daa78a70d6b217f9c13c8c85 |
| linux | linux | >= 0120dd6e4e202e19a0e011e486fb2da40a5ea279 < 68ce397e8236088fc53b9532d383a722288c8194 | 68ce397e8236088fc53b9532d383a722288c8194 |
| linux | linux | >= 0120dd6e4e202e19a0e011e486fb2da40a5ea279 < e3668b371329ea036ff022ce8ecc82f8befcf003 | e3668b371329ea036ff022ce8ecc82f8befcf003 |
| linux | linux_kernel | — | — |